
<body>

<style type="text/css">
table {border-collapse:collapse;
    border-spacing:0px;
    border-style:solid solid solid solid;
}
td,th {
    height:25px;
    border-width:1px;
    border-color:black;
    border-style:solid solid solid solid;
}
table tr:first-child td{
    border-top-style:none;
}
</style>
<table name="hello">
    <caption>modbus protocol</caption>
    <col span="1" style="background-color:red"/>
    <col span="1" style="background-color:yellow"/>
    <col span="1" style="background-color:green"/>
    <col span="1" style="background-color:blue"/>
    <col span="1" style="background-color:red"/>
    <col span="1" style="background-color:red"/>
    <col span="1" style="background-color:red"/>
    <col span="1" style="background-color:red"/>
    <col span="1" style="background-color:red"/>
    <tr>
        <td>0</td>
        <td>1</td>
        <td>2</td>
        <td>3</td>
        <td>4</td>
        <td>5</td>
        <td>6</td>
        <td>7</td>
        <td>8</td>
        <td>9</td>
        <td>a</td>
        <td>b</td>
        <td>c</td>
        <td>d</td>
        <td>e</td>
        <td>f</td>
    </tr>
    <tr>
        <td colspan="1">addr</td>
        <td colspan="1">func</td>
        <td colspan="1">data</td>
        <td>crc</td>
    </tr>
    <tr>
        <td colspan="1">uint8_t</td>
        <td colspan="1">uint8_t</td>
        <td colspan="1">var </td>
        <td>uint16_t</td>
    </tr>
</table>
<table name="data" >
    <tr>
        <th>len</th>
        <th>reg</th>
    </tr>
    <tr>
        <td >1</td>
        <td >len/2</td>
    </tr>

</table>
</body>
